Feed-water heater for boilers.



No. 724,967. PATENTED APR. 7, 1903.

O. G. TAYLOR. FEED WATER HEATER FOR BOILERS. Arrqonron FILED APR. 23,1902.

N0 MODEL. 2 SHBETB-SHEET 1.

A TTOHNEYS THE "ohms PETERS c0, PnoTu-Lfl'nu, WASHINGTON. B4 c.

No. 724,967. PATENTED APR. 7, 1903.

' 0. G. TAYLOR.

FEED WATER HBATER FOR BOILERS.

APPLICATION FILED APR. 23, 1902. I0 MODEL. 2 sums-sum 2.

w/ TNESSES:- //v vslvrok AQ X g Czar-Z21 611% [fay ar 1": uonms PETERSco PHOTO-LXTHO.. wAsnmumn. n. c

UNITED STATES PATENT OFFICE.

CHARLES GILBERT TAYLOR, OF FARMINGTON, WASHINGTON.

FEED-WATER H'EATER FOR BOILERS.

SPECIFISATION formingpart of Letters Patent No. 724,967, dated April 7,1903.

Application filed April 23, 1902. Serial No. 104,269. (No model.)

The purpose of my invention is to provide a feed-water heater forboilers so constructed that it is utilized as the sides and grate of afurnace except where a rocker-grate is required, when the device is usedas the sides of the furnace only, and the sides are connected at a pointbeneath the rocker-grate.

Another purpose of the invention is to provide a feed-water heater forboilers consisting of double series of tubing, the inside pipe being forfeed-water to the boiler and the out-j side pipe being arranged andadapted to al low the free circulation of water from and to the boiler,whereby theheater whenusedas.

the grate and "sides of a furnace i's exposed to a great heat, addingmaterially to the heatingsurface of a boiler, and the feed-water isheated to a high degree by what would otherwise be waste heat.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of the boiler and feed-Water heater and asection through the front casing and furnace; Fig. 2 is asectional planof the feed-water heater when used as a grate and side of a furnace.Fig. 3 is a sectional view of that portion of the water-circulating pipewhere the feed-water pipe ends, the latter pipeappearing in sideelevation.

Fig. 4 is a front elevation of the device shown in Fig. 2 and a frontelevation of a boiler to which it is applied; and Fig. 5 is a plan viewof the device, illustrating its construction when used in connectionwith a rocking grate and as the sides of the furnace only.

A represents the boiler, 13 the front casingwall, and C the back wall ofthe furnace.

- In the construction of both forms of the device an outer and an innerpipe 10 and 11 are provided, the outer pipe 10 being thewatercirculating pipe and the inner pipe 11 the feed-water pipe. Saidpipes are bent and provided with return-bends to form opposing coils D,in which one member of a coil is below the other, as is shown in Figs. 1and 4, and a connection between the pipes ofthe side coils. The sidecoils D are to constitute the side Walls of the furnace A for the boilerand rest at their rearportions upon the back wall O-of the furnace, asis shown in Fig. 1, and supports of any approved character may beprovided for the forward portions of the coils D, if found necessary.Where a rockergrate is not required, the side coils D are connected byintermediate horizontal coils D, as is shown in Figs. 2 and 4, whichhorizontal coils constitute the grate of the furnace; but where arocker-grate is employed the side coils D are. ,conn ected ,bytransverse pipes (1, one within the other, extending beneath the grate,preferably at its forward portion, as is shown in Fig. 5.

The feed-water pipe 11 is brought from any source of water-supply and ismade to enter the forward end of 'the upper member of one of the sidecoils D through a suitable stuffingbox 12 and extends throughout thelength of the outer or water-circulating pipe 10 of the coil or coilsand connecting-section d, preferably terminating near the outer end ofthe upper member of the opposite side coil D, as is shown in Fig. 3; butthe feed-water pipe 11 may terminate at any'desired point in the lengthof the water-circulating pipe 10.

At the outer end portion of the upper member of each side coil'a branchpipe 13 is connected by any well-known means, and these branch pipes 13enter the water-chamber of the boiler A at its front, as is shown inFigs. 1 and 4. Straightway valves 14 are located in the branch pipes 13,preferably where they connect with thecoilsD, and a blow-off valve 15 islocated in the water-circulating pipe 10 either at a member of thehorizontal coil DV or in the connecting-section all. By means of thestraightway valve 14 in the heater device the circulation of the watermay be shut off at any time, and by opening the blow-off ICO valve 15and closing either of the straightway valves 14 each side of the heatermay be blown out separately.

The size of the pipe used is to be governed by the capacity of theboiler, and the heater may be used upon either stationary or portableboilers.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1 l. A feed-water heater for boilers, consisting of adouble series of tubing adapted to be located in the furnace of aboiler, the inside tube being for supplying feed-water to the boiler andthe outside tube for adding to the free circulation of water intheboiler, a pipe for connecting the upper ends of the outside orcirculating, tube with the water-space in the boiler, and a cut-01fvalve in said pipe.

2. A feed-water heater for boilers, consisting of a double series oftubing adapted to be located in the furnace of the boiler, the outsidet-ube having means for connecting its ends with the water-space of theboiler, said outside tube being a water-circulating tube for the boiler,the inner tube being a feedwater tube for the boiler, the said inner orfeed-water tube entering the circulating-tube near one end, andterminating within the said circulating-tube between its ends, and acutoff valve in the upper end of the outer tube at a point between thetermination of the small tube and the boiler.

3. A feed-Water heater for boilers, consisting of a double series oftubes, the outer tube having means for connecting its ends with thewater-space of a boiler, the said outer tube being the water-circulatingtube for the boiler and the inner tube being the feed-water tube forsaid boiler, entering the circulating-tube near one end and terminatingwithin said circulating-tube between its ends, the said double tubingbeing bent to form side coils, one member of which is below the other,and a horizontal coil connecting the side coils, the side coils beingadapted as the side walls of a boiler-furnace, and the horizontal coilsbeing adapted as a grate for such furnace, cut-off valves locatedbetween the ends of the upper members of the side coils and theconnection of the circulating-tube with the boiler, and a blow-off valvelocated in a member of the horizontal coil of the circulating-tube, forthe purpose described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CHARLES GILBERT TAYLOR.

Witnesses:

W. L. MILES, J. BLICKENDERFER.

